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Who makes 64 sq ft glass annealed?

I believe this glazing is in a hazardous location. A 4x16 dual pane unit 6" above floor grade >18" above exterior grade. The only questionable code definition in my mind is R308.4.7.4 where the definition of walking surface is not defined suitably. Is a walking surface an area that can be walked on (exterior grade/Interior) or a designated walkway.

Re: Who makes 64 sq ft glass annealed?

Originally Posted by John Wilcox

Just wondering if it falls on engineering or contractors. Is it actually legal to fab a 4'x16' pane out of annealed glass? Who do you call to create this gem? Is there anywhere in the world this is legal? Seems a bit dangerous if you ask me.

Re: Who makes 64 sq ft glass annealed?

You missed *the reason* that some glazing is considered to be in "hazardous locations".

From the 2006 IRC. (see bold)

- R308.3 Human impact loads.

Individual glazed areas, including glass mirrors in hazardous locations such as those indicated as defined in Section R308.4, shall pass the test requirements of CPSC 16 CFR, Part 1201. Glazing shall comply with CPSC 16 CFR, Part 1201 criteria for Category I or Category II as indicated in Table R308.3.- - Exception: Louvered windows and jalousies shall comply with Section R308.2.

ANY large pane of glazing which falls and is not tempered could create shards large enough to injure or kill people, even if the pane of glazing is only 2' x 2', if is it above people, that 'could' happen.

Re: Who makes 64 sq ft glass annealed?

Jerry,
You're right, I misread the part about meeting all of the conditions to deemed hazardous. mine meets all but a questionable one regarding being within a horizontal distance of a walkway. The window is located approximately 6" above slab grade in a bucket 4' horizontally from the floor but open to the room.
My question now would be if the area outside of the glass would be considered a walkway or what that definition means. Would the actual bucket be a walkway being that you can walk in it?

Re: Who makes 64 sq ft glass annealed?

Yeah confusing I didn't get it until I saw it. It is a 4x16 box made of 1/4" steel that rests on an opening projecting into the exterior. one side is glass (exterior) other side is open to the interior.

Re: Who makes 64 sq ft glass annealed?

Originally Posted by John Wilcox

Yeah confusing I didn't get it until I saw it. It is a 4x16 box made of 1/4" steel that rests on an opening projecting into the exterior. one side is glass (exterior) other side is open to the interior.

Still confused.

Allow me to state what I am now envisioning:

You have a wall with an opening in it where the slab projects out 4 feet on each end and is 16 feet long. What is the height? I am presuming the 1/4" steel is the framing? Does that three-sided box have glazing in the ends, or just the outer side.

Basically, what I am envisioning is a 'bay window' which is 4 feet deep by 16 feet long by (how high)?

Or is it more like a bay window which is 4 feet deep by 16 feet high by (how long)?

Re: Who makes 64 sq ft glass annealed?

Glazing is how high above the interior walking surface and how far horizontally is the interior walking surface?

Same for the exterior walking surface.

A walking surface is any surface intended to be walked on. Inside, that would typically be a floor. Outside, that would be a patio, walkway, grassed area without plantings keeping one from walking on it (if there is grass up to the house and no plants, that is a walking surface, you can be sure kids and grown-ups will be walking there - BUT - if there is an intermediate landscaped area at least 3' wide, then the walking surface is over 3' from the house wall).

Re: Who makes 64 sq ft glass annealed?

Jerry,
You've cleared up a lot of confusion. There is actually glazing on only one side toward the exterior. The remaining sides are the 1/4" plate steel. The glazing itself rests on a steel platform 6" above slab grade and 4' away from intended walking surfaces(the interior floor).
So provided that the exterior of this window is protected by landscaping for three feet of projection from this window and it is not within 36" of an interior walking space it is actually safe and satisfies code.

Re: Who makes 64 sq ft glass annealed?

I never consider grass areas walking surfaces because in situations like determining we if a service gate around a pool is a pedestrian gate with all the issues for that kind of gate.
Grass areas next to high retaining walls are another place where the issue to guard or not to guard.
Ground next to a house is not a walkway. Albeit one can walk on it.
I consider a defined walkway made of pavers,stone ,cement etc. that directs people to walk on it by the fact that it is there and is a logical pathway from and to a design element on the property.

Re: Who makes 64 sq ft glass annealed?

and is a logical pathway from and to a design element on the property.

Richard,

Frequently, specified and defined walkways are *not* the logical walkways. Simply look around at all of the foot traffic paths through grassed areas - *those* are the "logical walkways".

Many eons ago, while growing up in Ft. Pierce, Florida, they built a new Junior College there (Indian River Junior College, however, back then, we all called it Sandspur Tech because of all the sandspurs). Instead of installing the concrete walkways at the time of construction, they waited until after the first classes started in September, then, at the Christmas break, they went in and laid the concrete walkways wherever the students made their own walkways through the grass - *THOSE* were the "logical" walkways.

Planners like to keep things nice and neat looking, people like to take straight lines - the shortest distance from Point A to Point B, across the grass or not.

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